Initial Alpine Version

1 files changed, 111 insertions, 0 deletions

diff --git a/pith/thread.h b/pith/thread.h
new file mode 100644
index 00000000..40b09bb0
--- /dev/null
+++ b/pith/thread.h
@@ -0,0 +1,111 @@
+/*
+ * $Id: thread.h 761 2007-10-23 22:35:18Z hubert@u.washington.edu $
+ *
+ * ========================================================================
+ * Copyright 2006 University of Washington
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * ========================================================================
+ */
+
+#ifndef PITH_THREAD_INCLUDED
+#define PITH_THREAD_INCLUDED
+
+
+#include "../pith/msgno.h"
+#include "../pith/indxtype.h"
+#include "../pith/state.h"
+#include "../pith/conf.h"
+
+
+#define	THD_TOP		0x0000		/* start of an individual thread */
+#define	THD_NEXT	0x0001
+#define	THD_BRANCH	0x0004
+
+typedef struct pine_thrd {
+    unsigned long rawno;	/* raw msgno of this message		*/
+    unsigned long thrdno;	/* thread number			*/
+    unsigned long flags;
+    unsigned long next;		/* msgno of first reply to us		*/
+    unsigned long branch;	/* like THREADNODE branch, next replier	*/
+    unsigned long parent;	/* message that this is a reply to	*/
+    unsigned long nextthd;	/* next thread, only tops have this	*/
+    unsigned long prevthd;	/* previous thread, only tops have this	*/
+    unsigned long top;		/* top of this thread			*/
+    unsigned long head;		/* head of the whole thread list	*/
+} PINETHRD_S;
+
+
+/*
+ * Some macros useful for threading
+ */
+
+/* Sort is a threaded sort */
+#define SORT_IS_THREADED(msgmap)					\
+	(mn_get_sort(msgmap) == SortThread				\
+	 || mn_get_sort(msgmap) == SortSubject2)
+
+#define SEP_THRDINDX()							\
+	(ps_global->thread_index_style == THRDINDX_SEP 			\
+	 || ps_global->thread_index_style == THRDINDX_SEP_AUTO)
+
+#define COLL_THRDS()							\
+	(ps_global->thread_index_style == THRDINDX_COLL)
+
+#define THRD_AUTO_VIEW()						\
+	(ps_global->thread_index_style == THRDINDX_SEP_AUTO)
+
+/* We are threading now, pay attention to all the other variables */
+#define THREADING()							\
+	(!ps_global->turn_off_threading_temporarily			\
+	 && SORT_IS_THREADED(ps_global->msgmap)				\
+	 && (SEP_THRDINDX()						\
+	     || ps_global->thread_disp_style != THREAD_NONE))
+
+/* If we were to view the folder, we would get a thread index */
+#define THRD_INDX_ENABLED()						\
+	(SEP_THRDINDX()							\
+	 && THREADING())
+
+/* We are in the thread index (or would be if we weren't in an index menu) */
+#define THRD_INDX()							\
+	(THRD_INDX_ENABLED()						\
+	 && !sp_viewing_a_thread(ps_global->mail_stream))
+
+/* The thread command ought to work now */
+#define THRD_COLLAPSE_ENABLE()						\
+	(THREADING()							\
+	 && !THRD_INDX()						\
+	 && ps_global->thread_disp_style != THREAD_NONE)
+
+
+/* exported protoypes */
+PINETHRD_S   *fetch_thread(MAILSTREAM *, unsigned long);
+PINETHRD_S   *fetch_head_thread(MAILSTREAM *);
+void	      set_flags_for_thread(MAILSTREAM *, MSGNO_S *, int, PINETHRD_S *, int);
+void	      erase_threading_info(MAILSTREAM *, MSGNO_S *);
+void	      sort_thread_callback(MAILSTREAM *, THREADNODE *);
+void	      collapse_threads(MAILSTREAM *, MSGNO_S *, PINETHRD_S *);
+PINETHRD_S   *msgno_thread_info(MAILSTREAM *, unsigned long, PINETHRD_S *, unsigned);
+void	      collapse_or_expand(struct pine *, MAILSTREAM *, MSGNO_S *, unsigned long);
+void	      select_thread_stmp(struct pine *, MAILSTREAM *, MSGNO_S *);
+unsigned long count_flags_in_thread(MAILSTREAM *, PINETHRD_S *, long);
+unsigned long count_lflags_in_thread(MAILSTREAM *, PINETHRD_S *, MSGNO_S *, int);
+int	      thread_has_some_visible(MAILSTREAM *, PINETHRD_S *);
+int	      mark_msgs_in_thread(MAILSTREAM *, PINETHRD_S *, MSGNO_S *);
+void	      set_thread_lflags(MAILSTREAM *, PINETHRD_S *, MSGNO_S *, int, int);
+char	      status_symbol_for_thread(MAILSTREAM *, PINETHRD_S *, IndexColType);
+char	      to_us_symbol_for_thread(MAILSTREAM *, PINETHRD_S *, int);
+void	      set_thread_subtree(MAILSTREAM *, PINETHRD_S *, MSGNO_S *, int, int);
+int	      view_thread(struct pine *, MAILSTREAM *, MSGNO_S *, int);
+int	      unview_thread(struct pine *, MAILSTREAM *, MSGNO_S *);
+PINETHRD_S   *find_thread_by_number(MAILSTREAM *, MSGNO_S *, long, PINETHRD_S *);
+void	      set_search_bit_for_thread(MAILSTREAM *, PINETHRD_S *, SEARCHSET **);
+
+
+#endif /* PITH_THREAD_INCLUDED */